R - Comment transformer une date qui est dans un format anglais?

I would like to transform January 2, 2018 at 02:55PM to datetime format . I use the package anytime. I added a new format addFormats("%B %d, %Y at %I:%M%p") but it doesn't work.

anytime(data$Date) returns "2018-01-02 CET". I lose the hour..